Mercedes Benz C 43 AMG Technical Service Bulletin # P-42_30-103 Date: 090113

Mercedes Benz C 43 AMG Technical Service Bulletin # P-42_30-103 Date: 090113

Brakes - ABS Pump Runs Continuously/Code C1401 Set

Date: January 13, 2009

Order No.: P-B-42.30/103

Supersedes:

Group: 42

348

SUBJECT:

All Model 202 Vehicles, Equipped with Anti-lock Brake System (ABS) (Code 470a)

All Model 208 Vehicles, Equipped with Anti-lock Brake System (ABS) (Code 470a)

ABS Return Flow Pump Runs Without Control

If you receive customer reports in the above model vehicles of the Anti-Lock Brake System (ABS) return flow pump running without control with

corresponding fault code C1401, clean and insulate the connector for the return flow pump relay. Refer to WIS document GF42.30-P-0003-09B.

Note:

Due to standardization of the ABS wire harness for both the Bosch and ITT systems, the plug for the return flow pump is not assigned on ITT

systems. As such, oxidation can occur within the plug causing the return flow pump in the ABS hydraulic unit to start.